TREK/server/tests/unit/nest/accommodations.service.test.ts

/**
 * Unit tests for AccommodationsService. DAY-SVC-016..026, 029 and 035 moved here
 * 1:1 with the SQL they cover when accommodations became their own domain; the
 * case ids are unchanged so the diff reads as a move. Real in-memory SQLite.
 */
import { describe, it, expect, vi, beforeAll, beforeEach, afterAll } from 'vitest';

const { testDb, dbMock } = vi.hoisted(() => {
  const Database = require('better-sqlite3');
  const db = new Database(':memory:');
  db.exec('PRAGMA journal_mode = WAL');
  db.exec('PRAGMA foreign_keys = ON');
  db.exec('PRAGMA busy_timeout = 5000');
  return {
    testDb: db,
    dbMock: {
      db,
      closeDb: () => {},
      reinitialize: () => {},
      getPlaceWithTags: () => null,
      canAccessTrip: (tripId: any, userId: number) =>
        db.prepare(`
          SELECT t.id, t.user_id FROM trips t
          LEFT JOIN trip_members m ON m.trip_id = t.id AND m.user_id = ?
          WHERE t.id = ? AND (t.user_id = ? OR m.user_id IS NOT NULL)
        `).get(userId, tripId, userId),
      isOwner: (tripId: any, userId: number) =>
        !!db.prepare('SELECT id FROM trips WHERE id = ? AND user_id = ?').get(tripId, userId),
    },
  };
});

vi.mock('../../../src/db/database', () => dbMock);
const { broadcast } = vi.hoisted(() => ({ broadcast: vi.fn() }));
vi.mock('../../../src/websocket', () => ({ broadcast }));

import { createTables } from '../../../src/db/schema';
import { runMigrations } from '../../../src/db/migrations';
import { resetTestDb } from '../../helpers/test-db';
import { createUser, createTrip, createDay, createPlace, createDayAccommodation } from '../../helpers/factories';
import { DatabaseService } from '../../../src/nest/database/database.service';
import { PermissionsService } from '../../../src/nest/permissions/permissions.service';
import { RealtimeService } from '../../../src/nest/realtime/realtime.service';
import { AccommodationsService } from '../../../src/nest/accommodations/accommodations.service';
import { AccommodationsModule } from '../../../src/nest/accommodations/accommodations.module';
import { AccommodationsController } from '../../../src/nest/accommodations/accommodations.controller';
import { expectRegisteredProvider, expectRegisteredController } from '../../helpers/module-providers';

// Named `svc` so the moved cases read exactly as they did on DaysService.
const svc = new AccommodationsService(
  new DatabaseService(testDb),
  new PermissionsService(new DatabaseService(testDb)),
  new RealtimeService(),
);

beforeAll(() => {
  createTables(testDb);
  runMigrations(testDb);
});

beforeEach(() => {
  resetTestDb(testDb);
});

afterAll(() => {
  testDb.close();
});

describe('validateAccommodationRefs', () => {
  it('DAY-SVC-016 — returns no errors when all refs are valid', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Hotel' }) as any;
    const errors = svc.validateAccommodationRefs(trip.id, place.id, day.id, day.id);
    expect(errors).toHaveLength(0);
  });

  it('DAY-SVC-017 — returns error when place does not exist in trip', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const errors = svc.validateAccommodationRefs(trip.id, 99999, day.id, day.id);
    expect(errors.some((e: any) => e.field === 'place_id')).toBe(true);
  });

  it('DAY-SVC-018 — returns error when start_day_id is invalid', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Hotel' }) as any;
    const errors = svc.validateAccommodationRefs(trip.id, place.id, 99999, day.id);
    expect(errors.some((e: any) => e.field === 'start_day_id')).toBe(true);
  });
});

describe('createAccommodation', () => {
  it('DAY-SVC-019 — creates accommodation and returns it with place info', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Grand Hotel' }) as any;

    const accom = svc.createAccommodation(trip.id, {
      place_id: place.id,
      start_day_id: day.id,
      end_day_id: day.id,
      check_in: '15:00',
      check_out: '11:00',
    }) as any;

    expect(accom).toBeDefined();
    expect(accom.place_name).toBe('Grand Hotel');
  });

  it('DAY-SVC-020 — auto-creates a linked reservation', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'City Hotel' }) as any;

    const accom = svc.createAccommodation(trip.id, {
      place_id: place.id, start_day_id: day.id, end_day_id: day.id,
    }) as any;

    const reservation = testDb.prepare('SELECT * FROM reservations WHERE accommodation_id = ?').get(accom.id) as any;
    expect(reservation).toBeDefined();
    expect(reservation.type).toBe('hotel');
    expect(reservation.status).toBe('confirmed');
  });
});

describe('getAccommodation', () => {
  it('DAY-SVC-021 — returns accommodation for valid id and trip', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Hotel' }) as any;
    const accom = createDayAccommodation(testDb, trip.id, place.id, day.id, day.id) as any;
    const found = svc.getAccommodation(accom.id, trip.id) as any;
    expect(found).toBeDefined();
    expect(found.id).toBe(accom.id);
  });

  it('DAY-SVC-022 — returns undefined for non-existent accommodation', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    expect(svc.getAccommodation(99999, trip.id)).toBeUndefined();
  });
});

describe('updateAccommodation', () => {
  it('DAY-SVC-023 — updates check-in and check-out times', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Hotel' }) as any;
    const accom = svc.createAccommodation(trip.id, {
      place_id: place.id, start_day_id: day.id, end_day_id: day.id,
    }) as any;

    const existing = svc.getAccommodation(accom.id, trip.id)!;
    const updated = svc.updateAccommodation(accom.id, existing as any, { check_in: '16:00', check_out: '12:00' }) as any;
    expect(updated).toBeDefined();

    // Verify linked reservation metadata was synced
    const reservation = testDb.prepare('SELECT * FROM reservations WHERE accommodation_id = ?').get(accom.id) as any;
    expect(reservation).toBeDefined();
    const meta = JSON.parse(reservation.metadata || '{}');
    expect(meta.check_in_time).toBe('16:00');
    expect(meta.check_out_time).toBe('12:00');
  });

  it('DAY-SVC-024 — preserves existing fields when not updated', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Hotel' }) as any;
    const accom = svc.createAccommodation(trip.id, {
      place_id: place.id, start_day_id: day.id, end_day_id: day.id,
      confirmation: 'ABC123',
    }) as any;

    const existing = svc.getAccommodation(accom.id, trip.id)!;
    svc.updateAccommodation(accom.id, existing as any, { check_in: '14:00' });

    const row = svc.getAccommodation(accom.id, trip.id) as any;
    expect(row.confirmation).toBe('ABC123');
  });
});

describe('deleteAccommodation', () => {
  it('DAY-SVC-025 — deletes accommodation and its linked reservation', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Hotel' }) as any;
    const accom = svc.createAccommodation(trip.id, {
      place_id: place.id, start_day_id: day.id, end_day_id: day.id,
    }) as any;

    const reservation = testDb.prepare('SELECT id FROM reservations WHERE accommodation_id = ?').get(accom.id) as any;

    const result = svc.deleteAccommodation(accom.id);
    expect(result.linkedReservationId).toBe(reservation.id);

    // Accommodation is gone
    expect(svc.getAccommodation(accom.id, trip.id)).toBeUndefined();

    // Reservation is gone
    const deletedRes = testDb.prepare('SELECT id FROM reservations WHERE id = ?').get(reservation.id);
    expect(deletedRes).toBeUndefined();
  });

  it('DAY-SVC-026 — returns null linkedReservationId when no reservation was linked', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id) as any;
    const place = createPlace(testDb, trip.id, { name: 'Hotel' }) as any;
    const accom = createDayAccommodation(testDb, trip.id, place.id, day.id, day.id) as any;

    // Remove the auto-created reservation so there's no linked one
    testDb.prepare('DELETE FROM reservations WHERE accommodation_id = ?').run(accom.id);

    const result = svc.deleteAccommodation(accom.id);
    expect(result.linkedReservationId).toBeNull();
  });
});

describe('listAccommodations', () => {
  it('DAY-SVC-029 — listAccommodations returns the hydrated stays', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id);
    const place = createPlace(testDb, trip.id, { name: 'Ryokan' });
    createDayAccommodation(testDb, trip.id, place.id, day.id, day.id);
    const rows = svc.listAccommodations(trip.id) as { place_name: string }[];
    expect(rows).toHaveLength(1);
    expect(rows[0].place_name).toBe('Ryokan');
  });
});

describe('quirk fixes', () => {
  it('DAY-SVC-035 — deleteAccommodation is atomic: a failed stay delete keeps the linked reservation', () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id);
    const place = createPlace(testDb, trip.id, { name: 'Hotel' });
    const accom = svc.createAccommodation(trip.id, {
      place_id: place.id, start_day_id: day.id, end_day_id: day.id,
    }) as { id: number };
    testDb.exec("CREATE TRIGGER boom BEFORE DELETE ON day_accommodations BEGIN SELECT RAISE(ABORT, 'boom'); END");
    try {
      expect(() => svc.deleteAccommodation(accom.id)).toThrow();
      // The earlier reservation delete inside the transaction rolled back.
      expect(testDb.prepare('SELECT COUNT(*) as n FROM reservations WHERE accommodation_id = ?').get(accom.id)).toMatchObject({ n: 1 });
    } finally {
      testDb.exec('DROP TRIGGER boom');
    }
  });
});

describe('AccommodationsService wiring', () => {
  it('ACC-001: the module carries the controller, the service and the RPC surface', () => {
    expectRegisteredController(AccommodationsModule, AccommodationsController);
    expectRegisteredProvider(AccommodationsModule, AccommodationsService);
    const exports = Reflect.getMetadata('exports', AccommodationsModule) as unknown[];
    expect(Array.isArray(exports)).toBe(true);
    expect(exports).toEqual(expect.arrayContaining([AccommodationsService]));
  });

  it('ACC-002: it does not import the days or reservations modules', () => {
    const imports = (Reflect.getMetadata('imports', AccommodationsModule) as { name?: string }[]) ?? [];
    expect(Array.isArray(imports)).toBe(true);
    const names = imports.map((m) => m?.name);
    expect(names).not.toContain('DaysModule');
    expect(names).not.toContain('ReservationsModule');
  });
});